I didn't make this PCB, but I made two Wasp filters following the schematic and replaced the 3080's with LM13700. It works fine. Apparently it is the exact same IC on the inside, but a few extra features in the LM13700._________________JacobWatters.com

I just used perfboard and made it up as I went. The schematic was easy to follow and everything worked on the first try (which doesn't happen half the time I solder something)._________________JacobWatters.com

The board was etched and populated about five years ago. This weekend I went into a troubleshooting spree and finally discovered that I had installed a wrong regulator. After fixing this and a bad trace to the resonance pot (courtesy to my etching skills) the filter rocks! Thanks for the layout ickystay

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